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<!DOCTYPE html> <html> <body> <h1>HTML DOM Events</h1> <h2>The ononline Event</h2> <p>Use the HTML DOM to assign an "ononline" and "onoffline" event to a body element.</p> <p><b>NOTE:</b> There will only be an "output" from this example when the browser shifts from offline to online.</p> <script> document.getElementsByTagName("BODY")[0].ononline = function() {onFunction()}; document.getElementsByTagName("BODY")[0].onoffline = function() {offFunction()}; function onFunction() { document.getElementById("demo").innerHTML = "Your browser is working online."; } function offFunction() { document.getElementById("demo").innerHTML = "Your browser is working offline."; } </script> </body> </html>
